{"id":"CVE-2026-98343","revision":"cf0b824110914890b931e12350ff4485","records":[{"revision":"cf0b824110914890b931e12350ff4485","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98343","aliases":[],"title":"dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()\n\nWhen dma_device_put() drops the last reference on chan->device->ref,\ndma_device_release() runs and may free the dma_device along with its\nchannels.\n\ndma_chan_put() then still reads chan->device->owner via\ndma_chan_to_owner() for the trailing module_put(). KASAN catches it:\n\n\tslab-use-after-free in dma_chan_put+0x3e6/0x4c0\n\tRead of size 8 by task insmod/6319\n\tFreed by task 6319:\n\t  kfree+0x225/0x470\n\t  dma_chan_put+0x395/0x4c0\n\t  dmaengine_put+0xf8/0x160\n\nCache the module owner in dma_chan_put() before the put so the trailing\nmodule_put() does not need chan->device.","state":0,"publishedAt":"2026-10-06T08:46:33.196+00:00","modifiedAt":"2026-10-19T09:17:54.287+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/dma/dmaengine.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8ad342a863590b24ce77681b7e081363fb3333f7\",\n                            \"lessThan\": \"b92c502595336a3cc5bb7a060170891366745a5d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8ad342a863590b24ce77681b7e081363fb3333f7\",\n                            \"lessThan\": \"855187a88bdf762c46b6849307597e3e02bfc1d9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8ad342a863590b24ce77681b7e081363fb3333f7\",\n                            \"lessThan\": \"c9780b601438137494b407eb4301bb3de2587ac9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8ad342a863590b24ce77681b7e081363fb3333f7\",\n                            \"lessThan\": \"07eb075b60d565a5e465a1945a80cc62807492ad\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8ad342a863590b24ce77681b7e081363fb3333f7\",\n                            \"lessThan\": \"9319dd64d5cdef851841c091f30424faa2284c31\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8ad342a863590b24ce77681b7e081363fb3333f7\",\n                            \"lessThan\": \"6cf31716b77a71c0d634106f4f3951377b8dc6dc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8ad342a863590b24ce77681b7e081363fb3333f7\",\n                            \"lessThan\": \"02bd02c585293634b213b142cba63cbf77891f6b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8ad342a863590b24ce77681b7e081363fb3333f7\",\n                            \"lessThan\": \"e873c74132f0c5f1452816cd9bb26208f0bba1e1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/dma/dmaengine.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d","https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9","https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9","https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad","https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31","https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc","https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b","https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98343","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98343","identifiers":["CVE-2026-98343"]},"retained":false,"historicalAffected":[]}],"coverage":[]}